13220201166 has 16 divisors (see below), whose sum is σ = 26535858384. Its totient is φ = 4390824384.

The previous prime is 13220201053. The next prime is 13220201167. The reversal of 13220201166 is 66110202231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13220201167) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3975535 + ... + 3978858.

It is an arithmetic number, because the mean of its divisors is an integer number (1658491149).

Almost surely, 2^13220201166 is an apocalyptic number.

13220201166 is an abundant number, since it is smaller than the sum of its proper divisors (13315657218).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13220201166 is a wasteful number, since it uses less digits than its factorization.

13220201166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7954675.

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 13220201166 its reverse (66110202231), we get a palindrome (79330403397).

The spelling of 13220201166 in words is "thirteen billion, two hundred twenty million, two hundred one thousand, one hundred sixty-six".